Either move first or do both. No point in doing an OS upgrade first as you could destroy a working system. My thoughts buts its your call as you are at the sharp end and I have every faith that you will do your best. Thanks Ian.

Yes not a good idea to upgrade the OS without FIRST moving to the new platform, which in itself may have opportunities/threats as yet unknown. Again Good Luck and Thank You.

I am just checking the fine details and expect to move to a new cloud server by mid next week. The CPU is twice as fast as our existing one and I'm told the port speed (the server access) will be faster too.

Part of the problem we have been living with has been restricted spare disk space and this is fully addressed by the new package.